864045 has 48 divisors (see below), whose sum is σ = 1852032. Its totient is φ = 362880.

The previous prime is 864037. The next prime is 864047. The reversal of 864045 is 540468.

864045 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 864045 - 2³ = 864037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3990 + ... + 4200.

It is an arithmetic number, because the mean of its divisors is an integer number (38584).

2⁸⁶⁴⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

864045 is an abundant number, since it is smaller than the sum of its proper divisors (987987).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864045 is a wasteful number, since it uses less digits than its factorization.

864045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 864045 is about 929.5402089205. The cubic root of 864045 is about 95.2457166321.

The spelling of 864045 in words is "eight hundred sixty-four thousand, forty-five".